308 T7NGULATA. 



18020. The axis vertebra. Figured, op. cit, pi. Ixiii. fig. 7. 



(Fig.) 



18021. The axis vertebra (imperfect). Figured, op. cit. pi. Ixiii. 

 (Fig.) fig. 10. 



18021 a, 18021 b. Two imperfect specimens of the axis vertebra. 



18021 C. The centrum of the axis vertebra. Figured, op. cit. 

 (Fig.) pi. Ixiii. fig. 8. 



18021 d. The centrum of the axis vertebra. Figured, op. cit. 

 (Fig.) pi. Ixiii. fig. 9. 



18038. The third cervical vertebra (imperfect). Figured, op. cit. 

 (Fig.) pi. Ixiii. fig. 12. 



18039. The third cervical vertebra (imperfect). 



18310. The fifth cervical vertebra (imperfect). Figured, op. cit. 

 (Fig.) pi. Ixiv. fig. 2. 



18311. The fifth cervical vertebra (imperfect). 



18312. The sixth cervical and the centra of two associated dorsal 

 (Fig.) vertebrae. The former is figured, op. cit. pi. Ixiv. fig. 1. 



18313. The sixth cervical vertebra, wanting the descending plate 

 (Fig.) of the right transverse processes. Figured, op. cit. pi. Ixiii. 



fig. 11. 



18314. The sixth cervical vertebra (imperfect). 



18315. The seventh cervical vertebra (imperfect). 



18316. The first (?) dorsal vertebra (imperfect). Figured, op. cit. 

 (Fig.) pi. Ixiv. fig. 3. 



18317. The second dorsal vertebra (imperfect). Figured, op. cit. 

 (Fig.) pi. Ixiv. fig. 6. 



18318. The second dorsal vertebra (imperfect). Figured, op. cit. 

 (Fig.) pi. Ixiv. fig. 4. 



18320. The fourth dorsal vertebra (imperfect). Figured, op. cit. 

 (Fig.) pi. Ixiv. fig, 5. 



18319. The fifth dorsal vertebra (imperfect). Figured, op. cit. 

 (Fig.) pi. Ixiv. fig. 7. 



18321. The associated fourth and fifth dorsal vertebrae (imper- 

 (Fig.) feet). Figured, op. cit. pi. Ixiv, fig. 9. 



